package com.hang.springrabbitmq.ttlQueue.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.BindingBuilder;
import org.springframework.amqp.core.CustomExchange;
import org.springframework.amqp.core.Queue;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class DelayedQueueConfig {
    //队列
    public static final String DELAYED_QUEUE_NAME = "delayed.queue";
    //交换机
    public static final String DELAYED_EXCHANGE_NAME = "delayed.exchange";
    //RoutingKey
    public static final String DELAYED_ROUTING_KEY = "delayed.routingkey";

    //声明队列
    @Bean
    public Queue delayedQueue(){
        return new Queue(DELAYED_QUEUE_NAME);
    }

    //声明交换机
    @Bean
    public CustomExchange delayedExchange(){
        Map<String, Object> arguments = new HashMap<>();
        arguments.put("x-delayed-type","direct");//定义直接类型

        /*
        * 自定义交换机
        * 1.交换机名称
        * 2.交换机类型
        * 3.是否需要持久化
        * 4.是否需要自动删除
        * 5.其他参数
        * */
        return new CustomExchange(DELAYED_EXCHANGE_NAME,"x-delayed-message",true,false,arguments);
    }

    //绑定
    @Bean
    public Binding delayedQueueBindingDelayedExchange(
            @Qualifier("delayedQueue") Queue delayedQueue,
            @Qualifier("delayedExchange") CustomExchange delayedExchange

    ) {
        return BindingBuilder.bind(delayedQueue).to(delayedExchange).with(DELAYED_ROUTING_KEY).noargs();
    }
}
